#whatsapp-flotante {
  position: fixed;
  right: 20px;
  bottom: 30px;
  z-index: 9999;
  display: flex;
  width: 80px;
  height: 80px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #25d366;
  box-shadow: 0 6px 25px rgba(37, 211, 102, 0.5);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#whatsapp-flotante[hidden] {
  display: none;
}

#whatsapp-flotante:hover,
#whatsapp-flotante:focus-visible {
  transform: scale(1.08);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.65);
}

#whatsapp-flotante:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
}

#whatsapp-flotante .whatsapp-flotante-icono {
  display: block;
  width: 48px;
  height: 48px;
  pointer-events: none;
}

#whatsapp-flotante .whatsapp-flotante-aviso {
  position: absolute;
  top: -2px;
  right: -2px;
  display: flex;
  width: 24px;
  height: 24px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #ef4444;
  color: #ffffff;
  font: 700 13px/1 Arial, sans-serif;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.5);
  animation: whatsapp-aviso-pulso 2s ease-in-out infinite;
}

#whatsapp-flotante::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 50%;
  right: 92px;
  padding: 10px 16px;
  border-radius: 8px;
  background: #128c7e;
  color: #ffffff;
  font: 600 14px/1.2 Arial, sans-serif;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translate(8px, -50%);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

#whatsapp-flotante:hover::after,
#whatsapp-flotante:focus-visible::after {
  opacity: 1;
  transform: translate(0, -50%);
}

@keyframes whatsapp-aviso-pulso {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

@media (max-width: 640px) {
  #whatsapp-flotante {
    right: max(16px, env(safe-area-inset-right));
    bottom: max(16px, env(safe-area-inset-bottom));
    width: 56px;
    height: 56px;
  }

  #whatsapp-flotante .whatsapp-flotante-icono {
    width: 34px;
    height: 34px;
  }

  #whatsapp-flotante::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  #whatsapp-flotante,
  #whatsapp-flotante::after,
  #whatsapp-flotante .whatsapp-flotante-aviso {
    animation: none;
    transition: none;
  }
}